This is from a vendor's perspective, since I do the programming for Nexus' back office service invoice system. This means having the team members write up invoices online for what they do for Nexus' customers (Landlords) and how the team members get paid and how the customers are billed.
In working for Nick and Greg for several years, I am impressed by their ability to formulate their requirements clearly, and also, since I constantly review how my stuff is working and therefore read tons of detailed invoices, how straightforward their communication with their customers is.
As I said once in an email to them, I like working for these guys, and for their team members.
